My jeep is running 31x10.50s and I've got a set of the traditional style chains that run across the tread. You want to make sure you've got the them as tight as possible and use at least three heavy duty bungee cords per wheel to keep everything in place (I prefer the thick black rubber type bungees), but they work like gangbusters when you really need them. My jeep also has about 4" of lift and in some situations I will still get some body contact. Depending on how much lift you have, you're mileage may vary, but if you have the clearance for them, I would recommend chains.